63654249 has 4 divisors (see below), whose sum is σ = 84872336. Its totient is φ = 42436164.

The previous prime is 63654247. The next prime is 63654251. The reversal of 63654249 is 94245636.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (63654247) and next prime (63654251).

It is not a de Polignac number, because 63654249 - 2¹ = 63654247 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (63654247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10609039 + ... + 10609044.

It is an arithmetic number, because the mean of its divisors is an integer number (21218084).

Almost surely, 2^63654249 is an apocalyptic number.

It is an amenable number.

63654249 is a deficient number, since it is larger than the sum of its proper divisors (21218087).

63654249 is a wasteful number, since it uses less digits than its factorization.

63654249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21218086.

The product of its digits is 155520, while the sum is 39.

The square root of 63654249 is about 7978.3612979107. The cubic root of 63654249 is about 399.2783843767.

It can be divided in two parts, 63654 and 249, that added together give a triangular number (63903 = T₃₅₇).

The spelling of 63654249 in words is "sixty-three million, six hundred fifty-four thousand, two hundred forty-nine".